You may pay 1 life and exile a blue card from your hand rather than pay Force of Will's mana cost.
Counter target spell.

, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card and put it onto the battlefield. Then shuffle your library.

Draw three cards, then put two cards from your hand on top of your library in any order.

: Look at the top three cards of your library, then put them back in any order.
: Draw a card, then put Sensei's Divining Top on top of its owner's library.

: Add to your mana pool.
: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
: Target Assembly-Worker creature gets +1/+1 until end of turn.

When a player casts a spell, sacrifice Standstill. If you do, each of that player's opponents draws three cards.

Put all creatures on the bottom of their owners' libraries.
Miracle

Flash
When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.

Counter target noncreature spell unless its controller pays .

Counter target spell.

Counter target spell with converted mana cost 2.

Exile target creature. Its controller gains life equal to its power.

Exile target creature. Its controller may search his or her library for a basic land card, put that card onto the battlefield tapped, then shuffle his or her library.

When Oblivion Ring enters the battlefield, exile another target nonland permanent.
When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card and put it onto the battlefield. Then shuffle your library.

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island.
: Add or to your mana pool.

: Add to your mana pool.
: Return target legendary creature to its owner's hand.

, Pay 1 life, Sacrifice Misty Rainforest: Search your library for a Forest or Island card and put it onto the battlefield. Then shuffle your library.

, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card and put it onto the battlefield. Then shuffle your library.

, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card and put it onto the battlefield. Then shuffle your library.

Sunburst
, Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives.

Put X 4/4 white Angel creature tokens with flying onto the battlefield.
Miracle

( can be paid with either or 2 life.)
Choose target card in a graveyard other than a basic land card. Search its owner's graveyard, hand, and library for any number of cards with the same name as that card and exile them. Then that player shuffles his or her library.

Flash
Split second
White creatures get +1/-1.

Choose one - Counter target blue spell; or destroy target blue permanent.

Flying
When Gilded Drake enters the battlefield, exchange control of Gilded Drake and up to one target creature an opponent controls. If you don't make an exchange, sacrifice Gilded Drake. This ability can't be countered except by spells and abilities. (This effect lasts indefinitely.)

Destroy target artifact or enchantment.

Choose one - Counter target red spell; or destroy target red permanent.

If you have less life than an opponent, you gain 6 life. If you control fewer creatures than an opponent, put three 1/1 white Soldier creatures tokens onto the battlefield.